我在我的適配器類中有兩個CheckBox
checkbox1,checkbox2。我想如果我檢查CheckBox
列表中的所有CheckBox
應該檢查。例如在我的ListView
中有20 CheckBox
,如果我檢查一個,所有其他19應該檢查。自定義列表視圖與選中和未選中的所有CheckBox列由android中的另一個CheckBox?
這個適配器類
public class ListViewAdapter extends ArrayAdapter<Friend> {
private List<Friend> myFriends;
private Activity activity;
private int selectedPosition = -1;
public ListViewAdapter(Activity context, int resource, List<Friend> objects) {
super(context, resource, objects);
this.activity = context;
this.myFriends = objects;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
// If holder not exist then locate all view from UI file.
if (convertView == null) {
// inflate UI from XML file
convertView = inflater.inflate(R.layout.item_listview, parent, false);
// get all UI view
holder = new ViewHolder(convertView);
// set tag for holder
convertView.setTag(holder);
} else {
// if holder created, get tag from view
holder = (ViewHolder) convertView.getTag();
}
holder.checkBox1.setTag(position); // This line is important.
holder.checkBox2.setTag(position+100);
holder.friendName.setText(getItem(position).getName());
if (position == selectedPosition) {
holder.checkBox.setChecked(true);
} else holder.checkBox.setChecked(false);
if(holder.checkBox1.getTag().equals(position)){ holder.checkBox1.setOnClickListener(onStateChangedListener(holder.checkBox1, position));
}else{
holder.checkBox2.setOnClickListener(onStateChangedListener(holder.checkBox2, position));
}
return convertView;
}
private View.OnClickListener onStateChangedListener(final CheckBox checkBox, final int position) {
return new View.OnClickListener() {
@Override
public void onClick(View v) {
if (checkBox.isChecked()) {
selectedPosition = position;
} else {
selectedPosition = -1;
}
notifyDataSetChanged();
}
};
}
private static class ViewHolder {
private TextView friendName;
private CheckBox checkBox1,checkBox2;
public ViewHolder(View v) {
checkBox1 = (CheckBox)v.findViewById(R.id.check);
checkBox2=(CheckBox)v.findViewById(R.id.check1);
friendName = (TextView) v.findViewById(R.id.name);
}
}
}
在ExpandableListView中如何實現我的帖子 – kumar
分享一些想法 – kumar